China&＃039;S LARGEST REPEATER OEM MANUFACTURER! Z-STONE Tech Co., Ltd. was established in 2002, it has a Doctor and Master degree based highly educated R&D and managerial team, Z-STONE specializes in researching, developing, manufacturing and exporting telecom equipment, microwave spread-spectrum apparatus and radio train dispatching device for more than 10 years. The application scopes of products involve the railroad, the telecom and the petrochemical. Z-STONE owns many specialized techniques and the patented technology, products were awarded the National Authoritative Department&＃039;s appraisal and authentication and ISO9001: 2000 quality management system certification. Since its establishment, Z-STONE has successfully solved many network optimization difficulties in China, if you wish to improve products life, if you expect to cost down the network optimization; If you appeal network quality, but are in worries; Please feel free to contact us, Z-STONE would like to offer various eminent products and customized solutions with reasonable price and excellent supports, we believe the mutually beneficial interaction creates success!